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 9 months ago
A student pushes a 40N block across the floor for a distance of 10 m. How much work was applied to move the block?
A.
4 J
B.
40 J
C.
400 J
D.
4000 J
 9 months ago
A student pushes a 40N block across the floor for a distance of 10 m. How much work was applied to move the block? A. 4 J B. 40 J C. 400 J D. 4000 J

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timaashorty
 9 months ago
Best ResponseYou've already chosen the best response.1I'm not 100% sure about this one but I would go with C.

kym02
 9 months ago
Best ResponseYou've already chosen the best response.1I think it's also C because work=force x distance.

theEric
 9 months ago
Best ResponseYou've already chosen the best response.0Right! Because the force and displacement are in the same exact direction, you can use that formula.

needhelpfastplease
 9 months ago
Best ResponseYou've already chosen the best response.1thanks everyone! You all are very helpful!

theEric
 9 months ago
Best ResponseYou've already chosen the best response.0:) You're welcome! More generally, \(\large W=F\dot\ d\dot\ \cos(\theta)\) where \(\theta\) is the angle between force and displacement. You can see that, when they're in the same direction, \(\theta=0\) \(\implies W=F\dot\ d\dot\ \cos(0)=F\dot\ d\dot\ 1=F\dot\ d\)
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